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Thread: Knocking from under the car.?????

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    Regular Member crespo's Avatar
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    Default Knocking from under the car.?????

    I have a slight nock that can be heard going over some bumps, its not a huge knock but there is defo a knock there.
    I have checked all the bushes and suspension components and they are all perfect.
    I also checked the exhaust system and that is also good.
    Anyone else had a knock and got it sorted. Maybe i have missed something.
    I was thinking engine mount but it seems unlikely.
    Any ideas.

  2. #2
    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

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    Radiator mounts can give a knock, is it coming from the front or the back?

  3. #3
    Regular Member crespo's Avatar
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    Quote Originally Posted by john.robertson2 View Post
    Radiator mounts can give a knock, is it coming from the front or the back?
    Its hard to tell mate to be honest. I think its the front but the misses thinks its the back.
    But then what does she know. Ill take a look at the radiator tomorrow when i whip the bumper off to fit my HID kit.

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    Top suspension mount?

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    Quote Originally Posted by crespo View Post
    But then what does she know. .

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    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

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    Did you check the rear upper control arms? They are best checked while the car is on the ground

  7. #7
    Regular Member crespo's Avatar
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    Quote Originally Posted by john.robertson2 View Post
    Did you check the rear upper control arms? They are best checked while the car is on the ground
    Yeah it was checked in a pit with a wobble thing. (you know so you can rock the car from side to side to replicate going over bumps) I could hear it but couldnt locate it for the life of me.

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    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

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    Go out and grab the top of the rear wheel and give it a few sharp tugs, that will definatly eliminate them. Also arb bushes can still clunk even although they don't look worn

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    Regular Member crespo's Avatar
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    Quote Originally Posted by john.robertson2 View Post
    Go out and grab the top of the rear wheel and give it a few sharp tugs

    Did that and all was well.

    Ill double check the ARB bushes as well tomorrow. If it comes to it i may change them anyway if the clunk carrys on.

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    Regular Member chris1804's Avatar
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    Quote Originally Posted by crespo View Post
    Did that and all was well.

    Ill double check the ARB bushes as well tomorrow. If it comes to it i may change them anyway if the clunk carrys on.

    thats what i did mine were perfect but i changed them anyway and the car didnt knock since i changed them so even the slight gap could make it knock

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